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Sequential uptake of cadmium and methylene blue from binary solution using zeolite‐TiO 2 modified porous CaCu 3 Ti 4 O 12 photocatalyst
Author(s) -
Saqib Najm Us,
Adnan Rohana,
Shah Irfan,
Hussain Ishtiaq
Publication year - 2021
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13595
Subject(s) - materials science , photocatalysis , anatase , scanning electron microscope , adsorption , aqueous solution , zeolite , composite number , methylene blue , chemical engineering , nanoparticle , porosity , dispersion (optics) , nuclear chemistry , nanotechnology , composite material , chemistry , organic chemistry , optics , catalysis , engineering , physics
This work describes the synthesis of CaCu 3 Ti 4 O 12 (CCTO) by a facile conventional oxide mixing method. The prepared CCTO particles were further modified with anatase TiO 2 NPs (~55 nm size) and zeolite supported TiO 2 nanoparticles (NPs) (~58 nm size) for the photocatalytic removal of MB and Cd 2+ from the aqueous media under compact fluorescent light. Both nascent and modified CCTO composite materials were characterized using X‐ray diffraction, scanning electron micrograph /energy dispersion X‐ray, BET, UV–VIS‐DRS, and pH of the point of zero charge analyses. These composite materials revealed with remarkable affinity toward MB and Cd 2+ , whereby the maximum photocatalytic degradation and adsorption capacity reached to 73 and 77 mg/g, respectively. The cations removal efficiencies of the prepared composite materials were found increased in the binary solutions of MB and Cd 2+ ions resulting in enhanced degradation and adsorption capacity, q e , up to 132, and 137 mg/g, respectively. The reusability tests revealed that the efficiencies of prepared composites gradually decreased upon reuse.